Movies and TV Streaming Online ‘Big Brother’ includes mysterious masked visitor in upcoming season: How to stream season 27 for free Updated: Aug. 01, 2025, 1:16 ...

CBS As many “Big Brother” fans predicted, legendary alum Rachel Reilly entered the game during the season 27 premiere. She previously placed ninth on season 12 and won season 13 in 2011.

Big Brother will stick to its usual Sunday-Wednesday-Thursday format, but with a twist. Wednesday episodes, traditionally reserved for the Golden Power of Veto competition and meeting, will now be ...

The new season of "Big Brother" will kick off with a 90-minute premiere on Thursday, July 10 at 8 p.m. ET / PT on CBS. A 90-minute episode will follow on Sunday, July 13 at 8 p.m. ET / PT on CBS.

What days will 'Big Brother' air this year? In addition to hour-long episodes Sundays and Thursdays, "Big Brother" will also have 90-minute episodes on Wednesdays, airing from 8-9:30 p.m. ET.

"Big Brother" is set to premiere this week. For Season 27 of the hit reality competition series, the official theme will be "Big Brother: A Summer of Mystery," CBS confirmed Wednesday, July 2.